1 files changed, 9 insertions, 5 deletions
diff --git a/lib/sqlalchemy/orm/__init__.py b/lib/sqlalchemy/orm/__init__.py
index 4a8c94d7b..9e9615635 100644
--- a/lib/sqlalchemy/orm/__init__.py
+++ b/lib/sqlalchemy/orm/__init__.py
@@ -15,16 +15,20 @@ from sqlalchemy.orm.mapper import Mapper, object_mapper, class_mapper, mapper_re
 from sqlalchemy.orm.interfaces import SynonymProperty, MapperExtension, EXT_PASS, ExtensionOption
 from sqlalchemy.orm.properties import PropertyLoader, ColumnProperty, CompositeProperty, BackRef
 from sqlalchemy.orm import mapper as mapperlib
-from sqlalchemy.orm import collections
+from sqlalchemy.orm import collections, strategies
 from sqlalchemy.orm.query import Query
 from sqlalchemy.orm.util import polymorphic_union
 from sqlalchemy.orm.session import Session as create_session
 from sqlalchemy.orm.session import object_session, attribute_manager
 
-__all__ = ['relation', 'column_property', 'composite', 'backref', 'eagerload', 'lazyload', 'noload', 'deferred', 'defer', 'undefer', 'undefer_group', 'extension',
-        'mapper', 'clear_mappers', 'compile_mappers', 'class_mapper', 'object_mapper', 'MapperExtension', 'Query',
-        'polymorphic_union', 'create_session', 'synonym', 'contains_alias', 'contains_eager', 'EXT_PASS', 'object_session'
-        ]
+__all__ = ['relation', 'column_property', 'composite', 'backref', 'eagerload',
+           'lazyload', 'noload', 'deferred', 'defer', 'undefer',
+           'undefer_group', 'extension', 'mapper', 'clear_mappers',
+           'compile_mappers', 'class_mapper', 'object_mapper',
+           'MapperExtension', 'Query', 'polymorphic_union', 'create_session',
+           'synonym', 'contains_alias', 'contains_eager', 'EXT_PASS',
+           'object_session'
+           ]
 
 def relation(*args, **kwargs):
     """Provide a relationship of a primary Mapper to a secondary Mapper.